When did momondo last update prices for flights from Helena Airport to London?

Prices for flights from Helena Airport to London were last updated today.

How old do you have to be to fly from Helena Airport to London?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Helena Airport to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$835 Cheap Flights from Helena to London in 2026/27

Find the cheapest flights from Helena to London

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:36 pm - 9:40 amHLN Helena-LHR London Heathrow

12h 04m1 stop Denver Intl

7:30 am - 8:59 pmLHR London Heathrow-HLN Helena

20h 29m2 stops Frankfurt am Main Denver Intl

$835United Airlines

Tue, Mar 2 - Thu, Mar 4

2:36 pm - 9:40 amHLN Helena-LHR London Heathrow

12h 04m1 stop Denver Intl

7:30 am - 8:59 pmLHR London Heathrow-HLN Helena

20h 29m2 stops Frankfurt am Main Denver Intl

$836United Airlines

Tue, Mar 2 - Thu, Mar 4

6:30 am - 7:55 amHLN Helena-LHR London Heathrow

18h 25m2 stops Denver Intl Chicago O'Hare Intl

7:30 am - 8:59 pmLHR London Heathrow-HLN Helena

20h 29m2 stops Frankfurt am Main Denver Intl

$840United Airlines

Tue, Mar 2 - Thu, Mar 4

6:30 am - 7:55 amHLN Helena-LHR London Heathrow

18h 25m2 stops Denver Intl Chicago O'Hare Intl

7:30 am - 8:59 pmLHR London Heathrow-HLN Helena

20h 29m2 stops Frankfurt am Main Denver Intl

$841United Airlines

Tue, Mar 2 - Thu, Mar 4

4:08 pm - 12:20 pmHLN Helena-LHR London Heathrow

13h 12m1 stop Seattle/Tacoma Intl

2:45 pm - 3:31 pmLHR London Heathrow-HLN Helena

31h 46m1 stop Seattle/Tacoma Intl

$902Alaska Airlines

Tue, Mar 2 - Thu, Mar 4

4:08 pm - 12:20 pmHLN Helena-LHR London Heathrow

13h 12m1 stop Seattle/Tacoma Intl

2:45 pm - 3:31 pmLHR London Heathrow-HLN Helena

31h 46m1 stop Seattle/Tacoma Intl

$903Alaska Airlines

Tue, Mar 2 - Thu, Mar 4

4:17 pm - 12:20 pmHLN Helena-LHR London Heathrow

13h 03m1 stop Seattle/Tacoma Intl

2:45 pm - 3:37 pmLHR London Heathrow-HLN Helena

31h 52m1 stop Seattle/Tacoma Intl

$903Alaska Airlines

Tue, Mar 2 - Thu, Mar 4

2:30 pm - 7:10 amHLN Helena-LHR London Heathrow

33h 40m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

7:30 am - 8:59 pmLHR London Heathrow-HLN Helena

19h 29m2 stops Frankfurt am Main Denver Intl

$908United Airlines

Sat, Mar 13 - Thu, Mar 18

2:30 pm - 7:10 amHLN Helena-LHR London Heathrow

33h 40m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

3:00 pm - 8:59 pmLHR London Heathrow-HLN Helena

35h 59m2 stops Toronto Pearson Intl Denver Intl

$917United Airlines

Sat, Mar 13 - Fri, Mar 19

12:50 pm - 10:00 amHLN Helena-LHR London Heathrow

14h 10m1 stop Salt Lake City

10:00 am - 10:41 pmLHR London Heathrow-HLN Helena

42h 41m2 stops Amsterdam Schiphol Salt Lake City

$939Delta

Fri, Mar 12 - Thu, Mar 18

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United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets

United Airlines

Mar 2

HLN2:36 pmHelena

12h 04m

1 stop

LHR9:40 amLondon Heathrow

Mar 4

LHR7:30 amLondon Heathrow

20h 29m

2 stops

HLN8:59 pmHelena

$835

United Airlines

Mar 2

HLN2:36 pmHelena

12h 04m

1 stop

LHR9:40 amLondon Heathrow

Mar 4

LHR7:30 amLondon Heathrow

20h 29m

2 stops

HLN8:59 pmHelena

$836

United Airlines

Mar 2

HLN6:30 amHelena

18h 25m

2 stops

LHR7:55 amLondon Heathrow

Mar 4

LHR7:30 amLondon Heathrow

20h 29m

2 stops

HLN8:59 pmHelena

$840

Alaska Airlines flights from Helena to London

Our best Alaska Airlines deals on Helena to London flight tickets

Alaska Airlines

Mar 2

HLN4:08 pmHelena

13h 12m

1 stop

LHR12:20 pmLondon Heathrow

Mar 4

LHR2:45 pmLondon Heathrow

31h 46m

1 stop

HLN3:31 pmHelena

$902

Alaska Airlines

Mar 2

HLN4:08 pmHelena

13h 12m

1 stop

LHR12:20 pmLondon Heathrow

Mar 4

LHR2:45 pmLondon Heathrow

31h 46m

1 stop

HLN3:31 pmHelena

$903

Alaska Airlines

Mar 12

HLN4:08 pmHelena

13h 12m

1 stop

LHR12:20 pmLondon Heathrow

Mar 18

LHR2:45 pmLondon Heathrow

30h 46m

1 stop

HLN3:31 pmHelena

$952

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 3/2

2:36 pm-9:40 am

1 stop12h 04m

London Heathrow

Thu 3/4

7:30 am-8:59 pm

2 stops20h 29m

$835

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 3/2

2:36 pm-9:40 am

1 stop12h 04m

London Heathrow

Thu 3/4

7:30 am-8:59 pm

2 stops20h 29m

$836

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 3/2

6:30 am-7:55 am

2 stops18h 25m

London Heathrow

Thu 3/4

7:30 am-8:59 pm

2 stops20h 29m

$840

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 3/2

6:30 am-7:55 am

2 stops18h 25m

London Heathrow

Thu 3/4

7:30 am-8:59 pm

2 stops20h 29m

$841

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 3/2

4:08 pm-12:20 pm

1 stop13h 12m

London Heathrow

Thu 3/4

2:45 pm-3:31 pm

1 stop31h 46m

$902

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 3/2

4:08 pm-12:20 pm

1 stop13h 12m

London Heathrow

Thu 3/4

2:45 pm-3:31 pm

1 stop31h 46m

$903

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 3/2

4:17 pm-12:20 pm

1 stop13h 03m

London Heathrow

Thu 3/4

2:45 pm-3:37 pm

1 stop31h 52m

$903

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Sat 3/13

2:30 pm-7:10 am

2 stops33h 40m

London Heathrow

Thu 3/18

7:30 am-8:59 pm

2 stops19h 29m

$908

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Sat 3/13

2:30 pm-7:10 am

2 stops33h 40m

London Heathrow

Fri 3/19

3:00 pm-8:59 pm

2 stops35h 59m

$917

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Fri 3/12

12:50 pm-10:00 am

1 stop14h 10m

London Heathrow

Thu 3/18

10:00 am-10:41 pm

2 stops42h 41m

$939

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Helena to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to London?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to London from Helena according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to London. Keep in mind that there are 3 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

When to book flights from Helena to London

Are you open to changing your travel dates? Check out the ideal times to fly from Helena to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Helena to London (HLN to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to London

Best Price Found	$835
Fastest flight time	12h 04m
Direct flights	None

The best flight deal from Helena to London found on momondo in the last 72 hours is $835

The fastest flight from Helena to London takes 12h 04m

There are no direct flights from Helena to London. There are no popular flight routes from Helena to London.

Search flight deals

Frequently asked questions about flying from Helena to London

How far is Helena to London by plane?
Helena and London are 4547.6 mi apart from one another. In terms of flight time, this usually takes a little over 12h 04m.
When did momondo last update prices for flights from Helena Airport to London?
Prices for flights from Helena Airport to London were last updated today.
How old do you have to be to fly from Helena Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Helena Airport to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Hounslow

Gatwick

Croydon

Hayes

Milton Keynes

Luton

Stansted

Kingston upon Thames

Watford

Richmond

Dover

Wembley

Crawley

Worthing

Harrow

Brentford

Canterbury

Hook

Dunstable

Eastbourne

Why use momondo?

Why should I use momondo to find a flight deal from Helena to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Helena to London. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Helena to London with flexible booking policies on momondo?

Yes. All flights to London from Helena on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Helena to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Helena to London.

I’m not ready to book a flight from Helena to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Helena and alert you when they change.

An easier way to manage your London trip

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London Stansted Airport

Cheap flights from Helena to London from $835

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to London departing on 3/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Helena to London

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Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets

Alaska Airlines flights from Helena to London

Our best Alaska Airlines deals on Helena to London flight tickets

momondo Fare Finder

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How to get the cheapest flight ticket from Helena to London

What airlines fly to London?

When to book flights from Helena to London

Cheap Helena to London (HLN to LON) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Helena to London

Traveling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Helena

According to popular flight searches on momondo this year

Complete your trip to London

Explore popular destinations other users love

According to popular flight searches on momondo this year